I don't believe that is possible because there are so many things that the control has to keep track of (start time, end time etc.). ViewState or Session would be huge if it wasn't connected to something which stored all of the information.
Ok, but maybe, in future, if you can provide an option for unbound mode, it would be nice (and sometime easier to make it a very powerful thing). With binding only option, it is sometime hard to control this monster :)